Spring-gun



(No Model.)

1". GASPAR.

SPRING GUN.

No. 255,141. 'Patented 1121.211282.

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. UNITED STATES PATENT OFFICE.

FREDERICK GASPAR, 0F PLAINFIELD, NEV JERSEY.

SPR|NG-GUN.

SPECIFICATION forming part of Letters Patent No. 255,141, dated March21, 1882.

Application filed January 12, 1882.

To all whom it may concern Beit known that I, FREDERICK GASPAR, ofPlaintield, in the county of Union and State of New Jersey, haveinvented an Improvement in SpringGuns, of which the following is aspecitication.

Spring-guns have been made with a strip of india-rubber that isdistended in drawing back the projector or tly; but the spring did notdrawstraight, and some ofthe momentum or power was lost by the springpassing around two or more pins. Besides this, the y was liable toinjure the other parts of the gun by the concussion in stopping.

My invention relates to the combination, with the rubber spring and liy,ot' a stop located between the barrel or groove ot' the body and thespring, in such a position that the rubber spring will wrap around suchstop and gradually arrest the momentum ot' the ily. Then the spring isdistended it occupies a straight, or nearly straight, position, so as toexert its greatest power upon the fly and arrow or other projectile, andcommunicate to the same the highest velocity that the spring is capableot' imparting when the liy is disengaged from the scar.

In the drawings, Figure l is alongitudinal section ot' vgun in positionfor tiring. Fig. 2 is a cross section at the line mx,bt1tir1larger size.Fig. 3 is a similar cross-section of the body with a barrel thereon.Fig. 4 is a plan ofthe spring- Sear and trigger detached, and Fig. 5 isan elevation ot' the same.

The stock a is of suitable size, either to be placed against theshoulder or held in the hand. The body b of the gun is made hollow forthe reception of the rubber spring c, and it Vis slotted lengthwise forthe shank ot' the pro- 40 jector or ily d to pass through and beconnected with the spring o. The upper surface of the body b is recessedto form a trough in which to lay the arrow or other missile that is tobe projected, Vor a sheet-metal barrel may be secured to the body b, asseen in Fig. 3. The shank i of the tly d is adapted to the reception ofthe rubber spring.

Round rubber cords may be employed for the spring, but I prefer to use aspring in the (No model.)

form of a hat strip of rubber passed through the shank i ofthe iiy, andthe two thicknesses of spring-rubber brought forward in the hollow bodyb, and out at an opening in the lower part ot' the front end ot' thebody and turned back and secured by a clamp, h. The spring passesbeneath the stop-pin or roller n., that is across the body b, and belowthe path of the ily and its shank, so that when the projector or fly isliberated from the sear it moves unobstruetedly forward and passes abovethis stop-pin or roller n, and carries the spring along with it, and inso doing wraps the rubber spring around such stoppin, and the positionof the same is such that the projector or ily is arrested in its forwardmovement before it reaches the end ofthe body b,the rubber spring alonestopping the momentum, and hence there is no noise or concussion.

The sear l is formed as a steel spring, the forward end of which isscrewed to the wood ofthe stock at the bottoni part of the hollow bodyb, and at its rear end is the tinger 3, that springs up into a notch inthe projector or y and holds the same, and there is a trigger, m, thatacts upon the second linger, 4, of thespring, so that when the triggeris pulled the fin ger is drawn down out of.the notch in the projector,and the latter is liberated, and the contractile rubber spring causessaid projector to ily forward with the utmost rapidity and project thearrow or dart with force and precision.

The arrow or dart is to be laid in the groove on the top of the body, orit may be inserted into the barrel.

If a lead ball is used, it may either be placed in the barrel orintroduced into a cavity at the front end of the projector or ily d.This projector or ily can be pushed back by a ramrod in preparing thegun to be discharged.

I remark that the body of the gun can be made ot two trough-shapedpieces of wood screwed together at their lower edges and lapping at eachside upon the forward part of the stock, so as to be fastened thereto.

At the front end ofthe body b is a removable plug, s. This can be takenout and the y removed for the insertion of a new rubber spring o. Thisis easily accomplished, as it is only necessary to remove the said plugand the clamp and unscrew the pin n, after which the new spring can bethreaded through the shank ot' the projector, and this is then slippedback to place, the end of the spring clamped, and the stop-pin nreplaced above the spring.

I claim as my invention- 1. In a spring-gun, the hollow body having agroove and slot in its upper surface, in combination with a projectortraveling in such groove and havinga shank in the hollow body,

and a contractile rubber spring attached at the forward end of the body,and a stop-pin across the hollow body and above the spring, for thepurposes and substantially as set forth.

within such body, and the projector traveling 2o in a groove inthe topedge of such body, substantially as set forth.

Signed by me this 31st day of December, A. D. 1881. y

FREDERICK GASPAR.

Witnesses:

OLIVER B. LEONARD, CRAIG A. MARsH.

